ALEXANDRIA, Va., Oct. 27 -- United States Patent no. 12,775,604, issued on Oct. 27, was assigned to Alibaba Group Holding Ltd. (Cayman Islands).

"Database index and database query processing method, apparatus, and device" was invented by Wei Hu (Hangzhou, China), Jie Zhou (Hangzhou, China) and Dengcheng He (Hangzhou, China).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method including determining a database table for which a database index is to be created, wherein the database table comprises a spatial field for storing spatial data; acquiring, for the database table, a spatial filter condition comprising a spatial field ID; and generating, according to the spatial filter condition, a tree-structured spa...